Overview
This study, conducted by U.S. Food and Drug Administration, tested 90 samples for 28 chemicals using Lc Ms Ms. Published December 1, 2024.
Summary by chemical class
| Class | Samples | Detections | Below MDL |
|---|---|---|---|
| PFAS | 12 | 0 | 304 |
Top detections
Highest concentrations reported in this study, ranked by value. Values shown in original study units — not directly comparable across measurement methods.
| Food / Product | Chemical | Value | Status |
|---|---|---|---|
| Cod | PFNA | 140.00 ppt | trace |
| Cod | PFUdA | 140.00 ppt | trace |
| Shrimp | PFTrDA | 110.00 ppt | trace |
| Shrimp | PFUdA | 100.00 ppt | trace |
| Salmon | PFUdA | 92.00 ppt | trace |
| Beef | PFOS | 72.00 ppt | trace |
| Cod | PFTrDA | 65.00 ppt | trace |
| Catfish | PFOS | 58.00 ppt | trace |
| Salmon | PFTrDA | 54.00 ppt | trace |
| Cod | PFDA | 47.00 ppt | trace |
| Tilapia | PFUdA | 45.00 ppt | trace |
| Cod | PFOS | 36.00 ppt | trace |
| Kale | PFBS | 34.00 ppt | trace |
| Tilapia | PFOS | 31.00 ppt | trace |
Methodology
Liquid chromatography tandem mass spectrometry (LC-MS/MS) analysis of U.S. food samples from the FDA Total Diet Study program. Method detection limits at parts-per-trillion (ng/kg) level. Trace values reported in italics indicate concentrations above the method detection limit but below the limit of quantitation.
Original source
FDA Total Diet Study Dataset 13 — PFAS in 2024 U.S. Food Supply
U.S. Food and Drug Administration · December 1, 2024